Factory original brake hoses are made of rubber. Rubber is not good at heat resistance and it will be swollen by hot brake fluid when the car is driven hard. As a result, more brake fluid has to go into the hose, which means brake pedal has to be pushed deeper even the actual brake performance is the same. This causes the difficult control of the brake pedal and accurate brake control won't be expected.
On the other hand, APP BRAKE LINE uses strong Teflon tube, which is wrapped by stainless mesh and also clear-coated on it. Thanks for this design, APP BRAKE LINE hardly changes in shape even with high fluid pressure. The pedal pressure will go directly to the brake calipers without any loss. You'll feel much better brake pedal touch with this high performance brake lines on your car.